Schottky rectifier for 5 A rail protection
The STPS5L40RL is a 40 V, 5 A Schottky barrier rectifier in a DO-201AD axial-lead package. The 500 mV forward voltage at 5 A keeps conduction losses low in power-supply output rectification and reverse-polarity protection circuits. Rated for a junction temperature up to 150 °C, it handles the thermal stress of continuous 5 A loads in through-hole designs without needing a heatsink in moderate ambient conditions.
Switching speed and leakage profile
Listed as a fast-recovery diode with ≤ 500 ns recovery time above 200 mA, this Schottky switches cleanly in low-frequency rectifiers and freewheeling applications up to several tens of kilohertz. Reverse leakage is 200 µA at the 40 V rated reverse voltage — typical for a 40 V Schottky at this current rating, and worth derating if the diode sees sustained reverse bias near the maximum in a warm enclosure.
The DO-201AD axial package (supplier device package DO-201AD) is a standard through-hole footprint that fits existing hole patterns for 5 A axial diodes. The tape-and-reel option (: Tape & Reel (TR); Cut Tape (CT)) suits automated insertion for volume builds. The base product number STPS5 covers a family of 5 A Schottkys; the RL suffix denotes the reel packaging variant for this specific order code.
STMicroelectronics lists the STPS5L40RL as Active (: productStatus=Active) and ROHS3 compliant (: rohsStatus=ROHS3 Compliant).